It was originally posted on Visual.ly (a site for creating and finding great infographics) over a year ago at http://visual.ly/many-forms-socializing-online.
It is missing Google+, but is still a great resource for educators and students looking to find new ways to socialize, learn, share, and connect online.
Lots more resources on Social Networking in Education:
Which Social Network should you use? Infographic on which to use when.
Visualy - create, share, and browse infographics
Twitter, Facebook, RSS feeds, Email, Google+ - why/when use each one
Twiducate - free social networking for schools
Twitter, Google Plus, and Facebook - a nice comparison
Twiducate - free social networking for schools
Twitter, Google Plus, and Facebook - a nice comparison
Twitter - A great resource for Education
Google+ - more reasons it's great for educators
Google+ and Google+ Pages - great for educators and schools
Social Media in Education - connect, share, learn, communicate and more
EDU 2.0 Free Course Management System for Schools
5 Great course management resources for educators
it's learning Course Management System
OpenClass - Pearson and Google combine to make free LMS
Learnboost online planner/gradebook announces new admin features
Google+ - more reasons it's great for educators
Google+ and Google+ Pages - great for educators and schools
Social Media in Education - connect, share, learn, communicate and more
EDU 2.0 Free Course Management System for Schools
5 Great course management resources for educators
it's learning Course Management System
OpenClass - Pearson and Google combine to make free LMS
Learnboost online planner/gradebook announces new admin features